Thermostat



P 5, 1932- .11 c. MONTERO AIR HEAT GENERATOR Filed Oct. 14, 1926 sSheets-Sheet 1 Sept. 6, 1932.

J. C. MONTERO AIR HEAT GENERATOR Filed Oct. 14, 1926 6 Sheets-Sheet 2 3,F9! E m l L C QM 01m Sept. 6, 1932. c, MQNTERQ 1,875,752

. AIR HEAT GENERATOR Sept. 6, 1932. c, MQNTERQ 1,875,752

AIR HEAT GENERATb R Filed Oct. 14, 1926 6 Sheets-Sheet 4 THERMOfiTATSept. 6, 1932.

I. C. MONTERO AIR HEAT GENERATOR Filed Oct. 14, 1926 6 Sheets-Sheet 5 3WWW Sept. 6, 1932. J. c. MONTERO 1,875,752

' AIR HEAT GENERATOR Filed Oct. 14, 1926 6 Sheets$heet 6 Patented Sept.6, 1932 JUAIjl' ('1. MONTERO, OF WASHINGTON, DISTRICT OF COLUMBIA A IBHEAT GENERATOR Application filed October 14,1926. Serial No. 141,453.

This invention relates to a device for heating and cooling rooms, thatis, a device which i is convertible from a heat generator anddistributor to a frigid air distributor. One object of the invention isto provide a comparatively simple, inexpensive, and thoroughlypractical, effective and desirable device of this character which isparticularly useful for heating individual rooms, hallways, etc., inwinter, and for cooling such rooms and hallways in summer.

Another object is to provide-a device of this character which isautomatically controlled for regulating the degree of heat to 5 bemaintained in the room or hallway to be heated or cooled.

Another object is to provide a device of this character with means forforcing the heated or cooled air from the device in a horizontaldirection at a level comparatively near the floor of the room or hallwayto be heated or cooled, for causing such heated or cooled air tointermingle with the atmosphere in the resident section of the room orhallway, that is, the portion of the room or hallwayT'here persons areor likely to be present, as distinguished from the upper part of theroom in which persons do not reside.

Another object is to provide a device of this character which iselectrically operated and controlled and which is conneotible to an,

ordinary electric circuit such as usually employed for the lighting andheating of residential rooms and apartments or homes.

Another object is to provide a unitary structure which is freelymovable, as a unit, from room to room or'from any locality to anotherwithout disarranging the essential 4o combination of its componentparts.

Another object of the invention isto provide a device of this characterwhich can be opened and closed easily and conveniently for' to theinternal elements 30 vided with an insulating tubular section betweentwo heat conducting tubular sections in the air tempering compartmentand motor-containing compartment, respectively, for preventing heatconduction from the air tempering compartment from detrimentallyaffecting the operation of the motor.

Other objects and important features are pointed out or implied in thefollowing details of construction, in connection with the accompanyingdrawings in which:

Figure 1 is a perspective view of the apparatus which constitutes oneform or embodiment of my invention.

Fig. 2 is a top plan view of the cabinet or casing which includes theair tempering compartment and the motor-containing compartment,thehinged/cover being omitted, the mirror and its supporting uprightsbeing also omitted.

F vg. 3 is an enlarged left end view of the cabinet, the hinged doorbeing open and exposing to view the motor, fan blades, motor fan-casingand the insulating plate having certain electrical connections'andcontrolling elements thereon, the right leg of the cabinet being brokenoff.

Fig. 4 is a longitudnal vertical central sectional view of the cabinetand its contents.

Fig. 5 is a diagrammatic view of the electric system forming part ofthis invention.

Fig. 6 is aperspective view/illpstrating'a slightly modified form of thell 1VentlOI1, such as shown in Figure 7 wherein a gas burner is employedin lieu of the electric heater shown in the previously described fi ure.V Fig. 7 is a side elevation, partly in section, of the form ofinvention shown in Fig. 6.

Fig. 8 is a perspective View of another modified form of theinvention,including a spigot forsupplying cooled water or tempered waterfrom the interior of the air tempering chamber.

Figure 9 is a side View, mostly in vertical section, showing the form ofinvention illustrated in Figure 8.

Referring to these drawings in detail, in which similar referencecharacters correspond with similar parts throughout the sev eral views,and first referring particularly to Figures 1, 2, 3, 4 and 5, it will beseen that each form of the invention includes a cabinet which consistsof an air tempering compartment and a second compartment which containsa motor-fan-casing, a relay switch and other electrical controlling andconnecting devices. In these first five figures, the cabinet is shown atC, and its left end is provided with a hinged door D which has an airinlet in its upper part, preferably covered by a sheet of screen wire orother foraminated material as shown at I. The top T is hinged to one endof the cabinet and is adapted to be raised for gaining access to the airtempering chamber, so as to make any necessary adjustments or repairs,also to place material or articles within this air tempering chamber. Ifpreferable, the top T may be hinged on a partition P which divides thecabinet into the two compartments and is composed principally of heatinsulating or heat resisting material. This partition is provided withan opening through which extends an insulating tubular section 10 whichconnects with a motor-fancasing 11 through the medium of a tubularsection 12 which forms the outlet of the motor-fan-casing. Vithin thismotor-fancasing a motor-fan 13 is mounted in any preferred andappropriate way, and the motor which drives the fan is indicated at M. Acoiled tubular member 14 connects to the other end of a tubular section10, so that the parts 10, 12 and 14 constitute a continuous air passagewhich has its outlet at 0 (see Figure 4), this outlet being covered bywire screening or other foraminous material.

A heating unit H is removably seated on the floor of the air temperingcompartment which is designated by the letter A, and this heating unitis normally electrically connected with any appropriate and convenientsource of electric energy (as shown in Figure 5), through the medium ofconducting means extending through the partition P into the chamberwhich is designated by the reference character B and which contains arelay switch R and other electrical connections on an insulating plateor slab S.

The right-hand end of the air tempering compartment is provided with adoor D having an opening into which the outlet 0 of the coiled pipesection 14 extends when the door is closed. This coiled pipe section issupported by horizontal bars 15 secured to opposite sides of the airtempering compartment A. It has its upper end preferably flared, as at16, and encloses the contiguous end of the pipe section 10. The pipesection 14 has a vent-opening 17 to permit expanded air to passtherethrough from the compartment A, and to relieve such compartmentfrom outward air pressure such as would result from a partial vacuumforming in the air tempering compartment.

A conduit 18 is provided through the bottom of the compartment B forpermitting electric conductors to extend therethrough for connectionwith the electric controlling elements on the slab S.

Referring now to Figure 5, the electrical connections and controllingelements are shown diagrammatically, and it will be seen that the motorM may be connected to or disconnected from the service wires 20 throughthe medium of a cut-out switch 21. W'hen this switch is closed, themotor is in circuit with service wires through the medium of conductors22 and 23, the latter terminating in a resistance 24 which forms part ofa rheostat, the movable contact of such rheostat being indicated at 25.This movable contact is an extension of a thermostatic element 26 whichis here diagrammatically shown and may be of any appropriate andpreferred construction. This device in which the rheostat 24 iscontrolled by the thermostat 26, will hereinafter be referred to as athermorheostat, and is designated by the reference characters TR. Theheating unit or heater 1-1 is also in circuit with the service wires,when the switch 21 is closed provided the circuit is also closed at 26which forms part of a relay switch hereafter more fully described. Thisheater has its terminals connected to conducting wires 27 and 28, andthe switch 26 is interposed in the conducting wire 28. It is throughthese conducting wires 27 and 28 that the switch 21 connects with themotor M and the heater H. The primary element of a potential transformerPT is also connected to these conducting wires 27 and 28, the secondaryelements of said potential transformer having one of its terminalsconnected to a conducting wire 29 which leads to the stationary element30 of a thermostat which has its movable element or contact finger 31between two adjustable contacts 32 and 33. These contacts 32 and 33 areconnected to conducting wires 34 and 35 which lead to electromagnets 36and 37 respectively. Armatures or switch elements 38 and 39 are inposition to be operated by the respective magnets 36 and 37 and to closethe electric circuit at 40 and 41 respectively. Both armatures 38 and 39are electrically connected by a conductor 42 to the conducting wire 27,and the stationary contacts of the switches 40'and 4l'are connectedrespectively to conducting wires 44 and 45 which have their terminalsconnected respectively to two coils 46 and 47 which have a commonconnection with the conducting wire 28 through the medium of a form therelay switch mechanism and potential transformer shown in side elevationin Figure 4 and in front elevation in Fig. 3. The thermostat which isabbreviated TH, in Figures 1 and 6 is composed of the parts indicated byreference characters 30, 31, 32 and 33, and this thermostat may beplaced at any convenient locality in the room to be heated or cooled bythis apparatus, and its electrical connections 29, 34 and 35 may enterthe cabinet through the conduit 18 through which the service wires 20may also enter, or

if preferable, the wires 27 and 28 may enter through this conduit 18,while the main cutout switch 21 may be at any convenient place in theroom instead of in the compartment B.

Now, presuming that the room is to be heated, the service switch or maincut-out switch 21 must be closed, and assuming that the service wiresare energized, the current will at once energize the heater H and at thesame time energizes the heat rheostat or thermo-rheostat to start themotor M, so that when theair is heated in the heating chamber A, theheat thereof is transferred by conductivity of the pipe section 14 intothis pipe section, while the fan 13 is operated by the motor M to drawair through the inlet I and force it from the fan-motor-casing 11through the tubular sections 10, 12 and 14, and the latter sectionretards the flow of air therethrough because of the coiled formation ofthis pipe section 14 continually changing the direction of flow of theair. air to be heated within the pipe section 14 sufficiently forkilling any germs that might be in the air, and this heated air passesout through the outlet 0 into the room so it commingles with theatmospheric air and raises the temperature of the latter. As thetemperature rises, the thermostat-rheostat (TR) operates to decrease theresistance, thereby causing the motor to increase its speed andthe speedof thefan 13, thereby forcing the air more speedily through the heatingcoil or pipe section 14, to prevent overheating of the air, thusregulating the temperature of the air from the outlet 0 and, at the sametime increasing the velocity of the air and increasing the distance towhich the stream of warmed air extends from the outlet As this outlet ishorizontally disposed and relatively near the floor on which the deviceis seated, the horizontal stream ofair pierces the lower strata ofatmosphere within the room, cgmmingling therewith and thereby heatingthis lower strata which'is-relatively cold because of its greater weightthan the upper strata. By this means, the temperature is kept more eventhroughout the room than it can be kept by means of heaters from whichthe heated air immediately rises to the upper part of the room.

Now, assuming that it is desired to use this device for lowering thetemperature in hot.

This enables the summer weather, the heating unit H is removed throughthe door Dl, the door is then closed and fastened, and the lid or hingedtop T is raised for opening the compartment A at the top, and now, thiscompartment A is filled or partly filled with ice which surrounds thetubing 14 so as to cool the latter and to cool the air therein, so nowwhen the motor fan operates, it forces this cooled air out through theopening 0 so it commingles with the relatively warm air in the room andlowers the temperature throughout the room in which the device isoperating. It should be understood that the contacts 32 and 33 are madeadjustable for enabling the contact arm 31 of the thermostat to makecontact therewith, respectively, at different temperatures, therebypredetermining the respective degrees of temperature at which the devicewill automatically start and stop the motor fan.

In connection with the air cooling arrangement, I may also provide awater container W which may either be sufliciently tall and narrow torest on the floor of the compartment A and extend up through the coil ortubing 14, or may be provided with supporting legs 52, as shown inFigure 9. This water container W, when surrounded by ice, is cooled bythe ice, at the same time kept from becoming excessively cool because ofthe relatively warm air in the tube 14 surrounding the water container.The pipe 53 is provided for the water container, the outer end of thispipe terminating in a spigot 54 through which the water may be drawn fordrinking purposes.

In this connection, while Figure 1 is shown to include a thermorheostat,and Figure 8 is shown to include a water spigot, it is understood thatthe the'rmorheostat and water spigot may both be included as parts ofthe same device. It should also be understood that all forms of theinvention may include a furniture member or mirror 55, as shown inFigure 1, if so desired. Instead of packing ice around the coil oftubing 14, the water container W may be employed as the ice container,especially where the device is to be used in moderately warm weather forslightly lowering the temperature. A drain cock 56 may be employed in apipe 57 which is extended from the interior of the container W throughthe floor of the compartment A.

Referringto Figures 6 and 7. and especially to the latter figure, itwill be seen that my inventive ideas also contemplate the use of a flameF for supplying heat to the compartment A, and a flue 58 is. employed inthe upper part of this compartment A for car;

The conduit 18 may be omitted, and the conducting wires may be providedwith appropriate insulation as indicated at 18a. The flame 1* may be fedwith gas or other fluid fuel through a feeding pipe 59.

Any appropriate means may be employed for supporting the slab S on whichthe relay switch R and its cooperative parts are supported, bracketsbeing here shown for supporting such slab.

Although I have described this invention in accordance with the formillustrated by accompanying drawings, it is not my intention to limit mypatent protection to the exact construction and arrangement here shown,but the inventive ideas contemplate appropriate changes within the scopeof the following claims.

IVhat I claim as my invention is:

1. In a device of the character described, the combination of a cabinetincluding a heat insulated compartment and a second compartmentseparated from one another by a heat insulating partition, the saidpartition having an opening therethrough, said heat insulatingcompartment having an outlet opening, an air conduit extending throughthe opening of said partition and to the said outlet opening, a meansfor affecting the temperature within said heat insulated com partmentand thereby affecting the temperature within said conduit, a fan-casingwithin said second compartment, a fan in the fancasing and operable toforce air through said conduit, and means automatically operable forincreasing and decreasing the speed of said fan in accordance with thetemperature of the atmosphere contiguous to such means.

2. In a device of the character described, the combination of a heatinsulating com partment, a heat conducting conduit therein, saidcompartment having an inlet opening and an outlet opening at which theends of said conduit terminate, means for aii'ecting the temperature insaid compartment and thereby affecting the temperature within said heatconducting conduit, a fan-casing outside of said heat conductingcompartment and provided with means to convey air from said fan intosaid conduit, electrical means to drive said fan. and a heat insulatingtubular section interposed between said conduit and the means whichconducts air from said fan-casing, substantially as shown, to preventthe conduction of heat from said heat conducting conduit into thepresence of the electrical means which drives said fan.

3. In a device of the character described, the combination of a cabinetor the like, an air conducting conduit of heat conducting material inthe cabinet, means to aiiect the temperature of the air around saidconduit and thereby affect the temperature within said conduit, a fan toforce air through said conduit, electrical means to drive said fan, anda thermo-rheostat on said cabinet and controllable by the temperatureconducted from said cabinet to the thermo-rheostat so as to control saidelectrical means in such manner as to increase the speed of the fan inproportion to the temperature in the part of the cabinet contiguous tothe thermo-rheostat.

4. The combination in a device of the character described, of a cabinetprovided with a heat-insulating partitition having an openingtherethrough, an electric heating unit in said cabinet, said compartmenthaving a second opening, an air conducting tubular coil in saidcompartment and having its ends in open communication with the saidopenings of said compartment, a fan-casing, a fan in said cas ing, asecond compartment containing said fan-casing in position for conductingair from the fan into said tubular coil, electrical means for drivingsaid fan, said electrical means including a potential transformer and arelay switch, a rheostat operable to control the current of saidelectrical means, a thermostat to control said rheostat, and a secondthermostat provided with means to control said relay switch.

5. In combination, a cabinet, automatic means to heat the cabinet,thermostatic means to control the heating of the cabinet, a tubular coilmember in said cabinet with said heating means and having atmosphericcommunication at its ends, and means to force a draught through the coilmember and electrically controlled means to control the draught-forcingmeans.

6. In an automatic system of air temperature generator, the combinationof a cabinet with a furniture member, a partition in said cabinet andforming two compartments thereby, one compartment for a heating elementwith a tubular coil member, a heat insulation encasing said elements,the second compartment for a motor and fan casing and electricalconnections, said second casing having an air intake opening at oneendand an air outlet opening at the other end, said casing and tubular coilmember having an atmospheric communication therethrough.

7. In an automatic system of air temperature generator, the combinationof a cabinet including an inner shell and an outer shell with a heatinsulation separating said shells, a part of said inner shell andinsulation forming a partitition in said cabinet thus forming twocompartments, a heater element and a tubular coil member in onecompartment, a cas ng and electrical connections in the othercompartment, an air intake opening at one end and an air outlet openingat the other end, said casing and tubular coil having an atmosphericcommunication therethrough.

S. In an automatic system of air temperature generator, the combinationof a fan, an

' outlet controlled means electric motor for driving the fan, anelectric circuit connected to the motor for energizing it, a circuitcloser for the electric circuit, a thermostat connected to closer andoperable at a relatively high temperature for closing the circuitcloser, a second circuit closer for the electric circuit, and a secondthermostat which is operable at a relatively low temperature for openingthe said circuit closer. I

9. In an automatic system of controlling air temperature, thecombination of a cabinet, a tubular air-receiving means in the cabinetand having both ends open to the outer air, an electric heating unit forheating the airreceiving means, an electric motor, a thermostat tocontrol the motor, a fan operable by said motor to force a draughtthrough the air-receiving means, and a second thermostat operable tocontrol the electric heating unit.

10. I air temperature, the combination of means to effect a hotatmosphere to a normal and predetermined temperature, a tubular coilhaving an air-inlet at one end and an air-outlet at its other end, afluid receptacle surrounded by said tubular coil, a heat-insulatedcompartment containing said coil and fluid recep tacle and alsoproviding means to containa means for cooling the coil and thereceptacle, means to force air through said coil, andtemperature-controlled means to control the air-forcing means.

11. In an automatic system of controlling air temperature, thecombination of means to eflect a hot atmosphere to a normal andpredeterminedtemperature, a tubular coil having an air-inlet at one endand an airpartment containing said coil a container for a cooling meansto cool said coil and thereby effect a cool atmosphere,

means to force air through said coil, a temperature-controlled means tocontrol the, airforclng means,

and a second temperaturefor controlling the temperaof the air-forcingmeans. whereof, I a'fiix my signature. JUAN C. MON TERO.

ture irrespective In testimony the said circuit n an automatic systemfor controlling at its other end, a heat-insulated coma and providing"

